I'm looking for advice on how normal full on tantrums are at this age and tips on how to handle them. DD5 is amazing but has fairly regular tantrums/meltdowns (I don't know which is the right word) when things don't go as planned.
So, for instance, she has been looking forward to playing with a friend. The friend wants to do something different to what she had planned and she has an absolute world-is-ending crying fit. Or she tries to do something (could be anything from reading to throwing a ball) and she can't do the thing she thinks she should be able to and that too is a full on crisis.
She is an only child in case that is relevant.
I'd like to help her be more resilient but I don't actually know what to do.